Lithia, FL
Quoted from Starwriter:Can someone explain, just exactly how a fuse protects the playfield? A coil of wire is going to draw a certain amount of current whether it's on for 1/4 of a second or 5 minutes. In actuality, the resistance of copper goes up as the temperature increases, so as it gets hotter, the current draw goes down. So, is the wire getting hot enough to melt the insulation and short circuit the windings? If that's the logic, then it seems like a fine line between melted insulation temperature and burned playfield paint temperature. Or is it that the circuit is actually drawing slightly more than 2 amps, but the fuse can stand it because it's only drawing for a split second? Then when the circuit locks on, the fuse eventually heats up like a space heater and melts.
Honestly not real sure what scenario takes place but it saved my playfield. I individually fused magnets before I stored my game at my sisters house. My nephew noticed the magnets we not working right one day. Sure enough found a popped fuse, put in another one and saw that the magnet was locked on.
